package uestc.lj.gulishop.ware.config;

import org.springframework.amqp.core.Binding;
import org.springframework.amqp.core.Exchange;
import org.springframework.amqp.core.Queue;
import org.springframework.amqp.core.TopicExchange;
import org.springframework.amqp.rabbit.connection.ConnectionFactory;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.amqp.support.converter.Jackson2JsonMessageConverter;
import org.springframework.amqp.support.converter.MessageConverter;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;

import java.util.HashMap;
import java.util.Map;

/**
 * @Author:Crazlee
 * @Date:2021/6/14
 */
@Configuration
public class MyRabbitConfig {

    //    @Autowired
    RabbitTemplate rabbitTemplate;

    @Bean
    @Primary
    RabbitTemplate rabbitTemplate(ConnectionFactory connectionFactory) {
        RabbitTemplate rabbitTemplate = new RabbitTemplate(connectionFactory);
        this.rabbitTemplate = rabbitTemplate;
        rabbitTemplate.setMessageConverter(messageConverter());
        return rabbitTemplate;
    }

    /**
     * 使用JSON序列化机制，进行消息转换
     *
     * @return
     */
    @Bean
    public MessageConverter messageConverter() {
        return new Jackson2JsonMessageConverter();
    }

    /**
     * 库存交换机
     *
     * @return
     */
    @Bean
    public Exchange stockEventExchange() {
        return new TopicExchange("stock-event-exchange", true, false);
    }

    /**
     * 接受过期订单锁定库存的队列
     *
     * @return
     */
    @Bean
    public Queue stockReleaseStockQueue() {
        return new Queue("stock.release.stock.queue", true, false, false);
    }

    /**
     * 延迟锁定库存的订单
     *
     * @return
     */
    @Bean
    public Queue stockDelayQueue() {
        Map<String, Object> map = new HashMap<>();
        map.put("x-dead-letter-exchange", "stock-event-exchange");
        map.put("x-dead-letter-routing-key", "stock.release");
        map.put("x-message-ttl", 120000);

        return new Queue("stock.delay.queue", true, false, false, map);
    }

    @Bean
    public Binding stockReleaseBinding() {
        return new Binding("stock.release.stock.queue", Binding.DestinationType.QUEUE, "stock-event-exchange",
                "stock.release.#", null);
    }

    @Bean
    public Binding stockLockedBinding() {
        return new Binding("stock.delay.queue", Binding.DestinationType.QUEUE, "stock-event-exchange",
                "stock.locked", null);
    }
}
